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Primitive Perfect Isosceles Right Triangled Square

Title: __ 18:42AD GHM

Order: 18

Horizontal side: 42 Vertical side: 42

Elements: 2√2, 3, 4, 3√2, 5, 4√2, 6, 9, 10, 9√2, 13, 10√2, 16, 13√2, 19, 16√2, 23, 26.

Code: 265 0 16 231 23 42 92 32 33 191 42 42 93 32 24 102 42 23 57 23 24 26 26 22 47 28 24 46 28 20 103 42 13 36 23 19 65 26 16 165 0 0 164 16 0 33 32 13 130 29 13 131 42 13

The properties below may precede order:side in a tiling's title:

Credit for Discovery

Just three people are credited with the discovery of Primitive Perfects:

Geoffrey H. Morley (GHM, England)

Jasper D. Skinner, II (JDS, United States)

William T. Tutte (WTT, Canada, 1917-2002) (15:44AI, 17:136AJ and 19:56AJ only)

26
23
9√2
19
9
10√2
5
2√2
4
4√2
10
3√2
6
16
16√2
3
13√2
13